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Neighborhoods › Downtown Brooklyn-DUMBO-Boerum Hill

300 Jay Street, Brooklyn: 19 building jobs on file

Building Identification Number 3335892 · Downtown Brooklyn-DUMBO-Boerum Hill. Newest first.

Full demolition of 11-story building, est. $670K
Approved · filed Sep 22, 2026 · est. $670,117
Mechanical/plumbing work: Modification of existing ductwork as per plans. no…, est. $176K
Approved · filed Sep 13, 2026 · est. $175,624
Interior renovation: Interior renovation of an existing corridor. minor…, est. $91K
Approved · filed Sep 10, 2026 · est. $90,635
Interior renovation: Change of use from classrooms to offices in buildings…, est. $4.9M
Objections · filed Aug 24, 2026 · est. $4,880,200
Interior renovation: Interior renovation of an existing office space…, est. $503K
Approved · filed Apr 9, 2026 · est. $502,840
Mechanical/plumbing work: Modification of existing mechanical system include…, est. $187K
Permit Entire · filed Mar 1, 2026 · est. $187,112
Full demolition of 11-story building, est. $670K
Permit Entire · filed Feb 26, 2026 · est. $670,117
Facade/scaffold work: Roofing hoist installation, est. $10K
Permit Entire · filed Feb 25, 2026 · est. $10,000
Mechanical/plumbing work: Modification of existing ductwork as per plans. no…, est. $176K
Permit Entire · filed Feb 24, 2026 · est. $175,624
Mechanical/plumbing work: Modification of existing mechanical system include…, est. $99K
Permit Entire · filed Feb 22, 2026 · est. $98,747
Interior renovation: Interior renovation of an existing corridor. minor…, est. $91K
Approved · filed Feb 19, 2026 · est. $90,635
Facade/scaffold work: Nyct namm hall facade repairs & complex plaza upgrade…, est. $3.3M
Approved · filed Feb 11, 2026 · est. $3,251,778
Mechanical/plumbing work: New clean agent system to the existing date center…, est. $153K
Approved · filed Feb 3, 2026 · est. $153,105
Mechanical/plumbing work: Installation of a 3 ton split ac unit as per…, est. $125K
Approved · filed Jan 22, 2026 · est. $125,265
Interior renovation: Structural framing and connection details for new steel…, est. $33K
Approved · filed Jan 7, 2026 · est. $32,592
Mechanical/plumbing work: Minor sprinkler work as per plans. no change of…, est. $107K
Approved · filed Jan 4, 2026 · est. $106,997
No Work
Approved · filed Dec 10, 2025 · est. not stated
Interior renovation: Replacement of existing roof drains, piping, bulkhead…, est. $26K
Permit Entire · filed Nov 13, 2025 · est. $26,000
Interior renovation: Interior renovations of computer labs at ground floor…, est. $1.9M
Approved · filed Nov 2, 2025 · est. $1,865,583

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